diff options
| author | Inochi Amaoto <inochiama@gmail.com> | 2024-10-24 14:21:03 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-14 19:54:49 +0100 |
| commit | 3613d540c1f3b2b629bcc38119966137353db4c2 (patch) | |
| tree | 5fa55c7378aeb948d673de6c3787bfbca8433fde | |
| parent | 2c9502ac832ab650528d50e14f8b752bf5175e5c (diff) | |
| download | linux-3613d540c1f3b2b629bcc38119966137353db4c2.tar.gz linux-3613d540c1f3b2b629bcc38119966137353db4c2.tar.bz2 linux-3613d540c1f3b2b629bcc38119966137353db4c2.zip | |
serial: 8250_dw: Add Sophgo SG2044 quirk
[ Upstream commit cad4dda82c7eedcfc22597267e710ccbcf39d572 ]
SG2044 relys on an internal divisor when calculating bitrate, which
means a wrong clock for the most common bitrates. So add a quirk for
this uart device to skip the set rate call and only relys on the
internal UART divisor.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Link: https://lore.kernel.org/r/20241024062105.782330-4-inochiama@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/tty/serial/8250/8250_dw.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index a1f2259cc9a9..72f9aab75ab1 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -770,7 +770,7 @@ static const struct dw8250_platform_data dw8250_renesas_rzn1_data = { .quirks = DW_UART_QUIRK_IS_DMA_FC, }; -static const struct dw8250_platform_data dw8250_starfive_jh7100_data = { +static const struct dw8250_platform_data dw8250_skip_set_rate_data = { .usr_reg = DW_UART_USR, .quirks = DW_UART_QUIRK_SKIP_SET_RATE, }; @@ -780,7 +780,8 @@ static const struct of_device_id dw8250_of_match[] = { { .compatible = "cavium,octeon-3860-uart", .data = &dw8250_octeon_3860_data }, { .compatible = "marvell,armada-38x-uart", .data = &dw8250_armada_38x_data }, { .compatible = "renesas,rzn1-uart", .data = &dw8250_renesas_rzn1_data }, - { .compatible = "starfive,jh7100-uart", .data = &dw8250_starfive_jh7100_data }, + { .compatible = "sophgo,sg2044-uart", .data = &dw8250_skip_set_rate_data }, + { .compatible = "starfive,jh7100-uart", .data = &dw8250_skip_set_rate_data }, { /* Sentinel */ } }; MODULE_DEVICE_TABLE(of, dw8250_of_match); |